<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-steps
        :space="200"
        :active="activeIndex-0"
        finish-status="success"
        class="stp"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <el-form
        :model="addForm"
        :rules="addGoodsRules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          v-model="activeIndex"
          tab-position="left"
          :before-leave="beforeLeave"
          @tab-click="tabClicked"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品类型">
              <el-cascader
                :options="cateList"
                v-model="addForm.goods_cat"
                :props="cascaderProps"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item :label="item.attr_name" v-for="(item,i) in manyTableData" :key="i">
              <el-checkbox
                v-model="item.attr_vals"
                :label="items"
                border
                v-for="(items,index) in item.attr_vals"
                :key="index"
              ></el-checkbox>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item :label="item.attr_name" v-for="(item,i) in onlyTableData" :key="i">
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              class="upload-demo"
              action="http://127.0.0.1:8888/api/private/v1/upload"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headerToken"
              :on-success="onSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <quill-editor class="bianjiqi" v-model="addForm.goods_introduce" />
            <el-button type="primary" @click="addSubmit">完成</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!-- 图片预览图 -->
    <el-dialog title="图片预览" :visible.sync="imgDialogVisible">
      <img :src="imgURL" class="previewImg" />
    </el-dialog>
  </div>
</template>

<script>
import _ from 'lodash'
export default {
  data() {
    return {
      activeIndex: '0',
      imgURL: '',
      imgDialogVisible: false,
      cateList: [],

      manyTableData: [],
      onlyTableData: [],
      headerToken: {
        Authorization: window.sessionStorage.getItem('token'),
      },
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        pics: [],
        goods_cat: [],
        attrs: [],
        goods_introduce: '',
      },
      addGoodsRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' },
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' },
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' },
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' },
        ],
      },
      cascaderProps: {
        expandTrigger: 'hover',
        value: 'cat_id',
        label: 'cat_name',
        children: 'children',
      },
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) return
      this.cateList = res.data
      //   console.log(this.cateList)
    },
    handleChange() {
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
      }
      console.log('this.addForm.goods_cat', this.addForm.goods_cat)
    },
    beforeLeave(activeName, oldActiveName) {
      //   console.log(oldActiveName)
      //   console.log(activeName)
      if (oldActiveName === '0') {
        if (this.addForm.goods_cat.length !== 3) {
          this.$message.error('请选择商品分类')
          return false
        }
      }
    },
    async tabClicked() {
      // console.log(this.activeIndex)
      if (this.activeIndex === '1') {
        console.log('进入了参数页面')
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: {
              sel: 'many',
            },
          }
        )
        console.log(res)
        if (res.meta.status !== 200)
          return this.$message.error('获取商品参数失败')
        res.data.forEach((item) => {
          item.attr_vals = item.attr_vals ? item.attr_vals.split(' ') : []
        })
        this.manyTableData = res.data
      } else if (this.activeIndex === '2') {
        console.log('进入了属性页面')
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: {
              sel: 'only',
            },
          }
        )
        console.log(res)
        if (res.meta.status !== 200)
          return this.$message.error('获取商品参数失败')
        this.onlyTableData = res.data
      }
    },
    // 删除上传图
    handleRemove(file) {
      //   console.log(file)
      const filePath = file.response.data.tmp_path
      const i = this.addForm.pics.findIndex((i) => {
        return i.pic === filePath
      })
      this.addForm.pics.splice(i, 1)
      console.log(this.addForm)
    },
    // 预览上传图片
    handlePreview(file) {
      console.log(file)
      this.imgURL = file.response.data.url
      this.imgDialogVisible = true
    },
    // 上传图片成功
    onSuccess(res) {
      console.log('上传成功:', res)
      this.addForm.pics.push({ pic: res.data.tmp_path })
      console.log('addform', this.addForm)
      this.$message.success('上传成功')
    },
    // 添加商品
    addSubmit() {
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) {
          return this.$message.error('请填写必要的表单项！')
        }
        // 添加商品前的操作
        const form = _.cloneDeep(this.addForm)
        form.goods_cat = form.goods_cat.join(',')
        // 处理动态参数
        this.manyTableData.forEach((item) => {
          const i = {
            attr_id: item.attr_id,
            attr_vals: item.attr_vals.join(' '),
          }
          this.addForm.attrs.push(i)
        })
        // 处理静态属性
        this.onlyTableData.forEach((item) => {
          const i = {
            attr_id: item.attr_id,
            attr_vals: item.attr_vals,
          }
          this.addForm.attrs.push(i)
        })
        form.attrs = this.addForm.attrs
        // console.log(form)
        const { data: res } = await this.$http.post('goods', form)
        if (res.meta.status !== 201) {
          return this.$message.error('添加商品失败！')
        }

        this.$message.success('添加商品成功！')
        this.$router.push('/goods')
      })
    },
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    },
  },
}
</script>
<style lang="less" scoped>
.stp {
  margin: 15px 0;
}
.previewImg {
  width: 100%;
}
.bianjiqi {
  margin: 0 0 15px 0;
}
</style>
